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DESIGN OF THE DEMOSNTRATION BULK VITRIFICATION SYSTEM FOR THE SUPPLEMENTAL TREATMENT OF LOW ACTIVITY TANK WASTE AT HANFORD

Description: In June 2004, the Demonstration Bulk Vitrification System (DBVS) was initiated with the intent to design, construct, and operate a full-scale bulk vitrification pilot-plant to treat low-activity tank waste from Hanford Tank 241-S-109. The DBVS facility uses In-Container Vitrification{trademark} (ICV{trademark}) at the core of the treatment process. The basic process steps combine liquid low-activity waste (LAW) and glassformers; dry the mixture; and then vitrify the mixture in a batch feed-whil… more
Date: February 14, 2008
Creator: JE, VAN BEEK
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Long Beach Transit: Two-Year Evaluation of Gasoline-Electric Hybrid Transit Buses

Description: This report focuses on a gasoline-electric hybrid transit bus propulsion system. The propulsion system is an alternative to standard diesel buses and allows for reductions in emissions (usually focused on reductions of particulate matter and oxides of nitrogen) and petroleum use. Gasoline propulsion is an alternative to diesel fuel and hybrid propulsion allows for increased fuel economy, which ultimately results in reduced petroleum use.
Date: June 1, 2008
Creator: Lammert, M.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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The continental margin is a key source of iron to the HNLC North Pacific Ocean

Description: Here we show that labile particulate iron and manganese concentrations in the upper 500m of the Western Subarctic Pacific, an iron-limited High Nutrient Low Chlorophyll (HNLC) region, have prominent subsurface maxima between 100-200 m, reaching 3 nM and 600 pM, respectively. The subsurface concentration maxima in particulate Fe are characterized by a more reduced oxidation state, suggesting a source from primary volcagenic minerals such as from the Kuril/Kamchatka margin. The systematics of the… more
Date: January 15, 2008
Creator: Lam, P. J. & Bishop, J. K. B
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Secondary organic aerosol from ozone-initiated reactions with terpene-rich household products

Description: We analyzed secondary organic aerosol (SOA) data from a series of small-chamber experiments in which terpene-rich vapors from household products were combined with ozone under conditions analogous to product use indoors. Reagents were introduced into a continuously ventilated 198 L chamber at steady rates. Consistently, at the time of ozone introduction, nucleation occurred exhibiting behavior similar to atmospheric events. The initial nucleation burst and growth was followed by a period in whi… more
Date: January 1, 2008
Creator: Coleman, Beverly; Coleman, Beverly K.; Lunden, Melissa M.; Destaillats, Hugo & Nazaroff, William W.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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VERTIGO (VERtical Transport In the Global Ocean): A study of particle sources and flux attenuation in the North Pacific

Description: The VERtical Transport In the Global Ocean (VERTIGO) study examined particle sources and fluxes through the ocean's 'twilight zone' (defined here as depths below the euphotic zone to 1000 m). Interdisciplinary process studies were conducted at contrasting sites off Hawaii (ALOHA) and in the NW Pacific (K2) during 3 week occupations in 2004 and 2005, respectively. We examine in this overview paper the contrasting physical, chemical and biological settings and how these conditions impact the sour… more
Date: June 10, 2008
Creator: Buesseler, K. O.; Trull, T. W.; Steinberg, D. K.; Silver, M. W.; Siegel, D. A.; Saitoh, S. I. et al.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Reduction of Water Use in Wet FGD Systems

Description: Cooperative Agreement DE-FC26-06NT42726 was established in January 2006, and is current through Amendment 2, April 2006. The current reporting period, April 1, 2008 through June 30, 2008, is the eighth progress-reporting period for the project. However, this report will be the final report (instead of a quarterly report) because this project is being terminated. Efforts to bring this project to a close over the past several months focused on internal project discussions, and subsequent communic… more
Date: June 30, 2008
Creator: Rencher, David
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Spent fuel sabotage test program, characterization of aerosol dispersal : interim final report.

Description: This multinational, multi-phase spent fuel sabotage test program is quantifying the aerosol particles produced when the products of a high energy density device (HEDD) interact with and explosively particulate test rodlets that contain pellets of either surrogate materials or actual spent fuel. This program provides source-term data that are relevant to plausible sabotage scenarios in relation to spent fuel transport and storage casks and associated risk assessments. We present details and sign… more
Date: March 1, 2008
Creator: Gregson, Michael Warren; Brockmann, John E.; Loiseau, Olivier (Institut de Radioprotection et de Surete Nucleaire, France); Klennert, Lindsay A.; Nolte, Oliver (Fraunhofer Institut fur Toxikologie und Experimentelle Medizin, Germany); Molecke, Martin Alan et al.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

High-Resolution UV Relay Lens for Particle Size Distribution Measurements Using Holography

Description: Shock waves passing through a metal sample can produce ejecta particulates at a metal-vacuum interface. Holography records particle size distributions by using a highpower, short-pulse laser to freeze particle motion. The sizes of the ejecta particles are recorded using an in-line Fraunhofer holography technique. Because the holographic plate would be destroyed in this energetic environment, a high-resolution lens has been designed to relay the interference fringes to a safe environment. Partic… more
Date: March 1, 2008
Creator: Malone, Robert M.; Frogget, Brent C.; Kaufman, Morris I.; Tibbits, Aric; Capelle, Gene A.; Grover, Mike et al.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Characterization of Fine Particulate Matter (PM) and Secondary PM Precursor Gases in Mexico City

Description: This project was one of three collaborating grants designed to understand the atmospheric chemistry and aerosol particle microphysics impacting air quality in the Mexico City Metropolitan Area (MCMA) and its urban plume. The overall effort, titled MCMA- 2006, focused on: 1) the primary emissions of fine particles and precursor gases leading to photochemical production of atmospheric oxidants and secondary aerosol particles and 2) the measurement and analysis of secondary oxidants and secondary … more
Date: March 31, 2008
Creator: Zavala, Dr. Charles E. Kolb Dr. Douglas R. Worsnop Dr. Manjula R. Canagaratna Dr. Scott C. Herndon Dr. John T. Jayne Dr. W. Berk Knighton Dr. Timothy B. Onasch Dr. Ezra C. Wood Dr. Miguel
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Particulate matter chemistry and dynamics in the Twilight Zone at VERTIGO ALOHA and K2 Sites

Description: Understanding particle dynamics in the 'Twilight Zone' is critical to prediction of the ocean's carbon cycle. As part of the VERTIGO (VERtical Transformations In the Global Ocean) project, this rarely sampled regime extending from the base of the euphotic layer to 1000 m, was characterized by double-paired day/night Multiple Unit Large Volume in-situ Filtration System (MULVFS) deployments and by {approx}100 high-frequency CTD/transmissometer/turbidity sensor profiles. VERTIGO studies lasting th… more
Date: March 25, 2008
Creator: Bishop, James K.B. & Wood, T.J.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Density of Spray-Formed Materials

Description: Spray Forming is an advanced materials processing technology that transforms molten metal into a near-net-shape solid by depositing atomized droplets onto a substrate. Depending on the application, the spray-formed material may be used in the as-deposited condition or it may undergo post-deposition processing. Regardless, the density of the as-deposited material is an important issue. Porosity is detrimental because it can significantly reduce strength, toughness, hardness and other properties.… more
Date: June 1, 2008
Creator: McHugh, Kevin M.; Uhlenwinkel, Volker & Ellendr, Nils
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Pitfalls of Transparency: Lessons Learned from the Milford Flats Fire

Description: The Community Environmental Monitoring Program (CEMP) consists of a network of 29 radiation and weather monitoring stations located over a 160,000-km2 area of southern Nevada, southwestern Utah, and southeastern California. The program provides stakeholders with a hands-on role in the monitoring for airborne radioactivity that could result from ongoing or past activities on the Nevada Test Site (NTS). The CEMP’s mission includes provisions for the transparency of the monitoring data as well as … more
Date: January 16, 2008
Creator: Hartwell, T.; Shafer, D.; Tappen, J.; McCurdy, G.; Hurley, B. & Farmer, D.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Aftertreatment Technologies for Off-Highway Heavy-Duty Diesel Engines

Description: The objective of this program was to explore a combination of advanced injection control and urea-selective catalytic reduction (SCR) to reduce the emissions of oxides of nitrogen (NOx) and particulate matter (PM) from a Tier 2 off-highway diesel engine to Tier 3 emission targets while maintaining fuel efficiency. The engine used in this investigation was a 2004 4.5L John Deere PowerTechTM; this engine was not equipped with exhaust gas recirculation (EGR). Under the original CRADA, the principa… more
Date: July 15, 2008
Creator: Kass, M.D.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Barium in Twilight Zone suspended matter as a potential proxy for particulate organic carbon remineralization: Results for the North Pacific

Description: This study focuses on the fate of exported organic carbon in the twilight zone at two contrasting environments in the North Pacific: the oligotrophic ALOHA site (22 degrees 45 minutes N 158 degrees W; Hawaii; studied during June-July 2004) and the mesotrophic Subarctic Pacific K2 site (47 degrees N, 161 degrees W; studied during July-August 2005). Earlier work has shown that non-lithogenic, excess particulate Ba (Ba{sub xs}) in the mesopelagic water column is a potential proxy of organic carbon… more
Date: April 10, 2008
Creator: Dehairs, F.; Jacquet, S.; Savoye, N.; Van Mooy, B. A. S.; Buesseler, K.; Bishop, J. K. B. et al.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Report of tritide study at the Responsive Neutron Generator Product Deployment Center.

Description: This report documents a study of sample counting results for wipes from routine surface area monitoring conducted at the Responsive Neutron Generator Product Deployment Center (RNGPDC) at Sandia National Laboratories (SNL). The study was initiated in November 2006, with two samples suspected of containing erbium tritide, after some samples were found to exhibit higher tritium counting rates upon recount at a later time. The main goal of the study was to determine whether the current practice of… more
Date: November 1, 2008
Creator: Burkhart, Robert & Coffey, Jaime
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Nevada Test Site 2007 Waste Management Monitoring Report Area 3 and Area 5 Radioactive Waste Management Sites

Description: Environmental monitoring data were collected at and around the Area 3 and Area 5 Radioactive Waste Management Sites (RWMSs) at the Nevada Test Site. These data are associated with radiation exposure, air, groundwater, meteorology, vadose zone, subsidence, and biota. This report summarizes the 2007 environmental data to provide an overall evaluation of RWMS performance and to support environmental compliance and performance assessment (PA) activities. Some of these data (e.g., radiation exposure… more
Date: June 1, 2008
Creator: National Security Technologies, LLC
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Improved Bacterial and Viral Recoveries from 'Complex' Samples using Electrophoretically Assisted Acoustic Focusing

Description: Automated front-end sample preparation technologies can significantly enhance the sensitivity and reliability of biodetection assays [1]. We are developing advanced sample preparation technologies for biowarfare detection and medical point-of-care diagnostics using microfluidic systems with continuous sample processing capabilities. Here we report an electrophoretically assisted acoustic focusing technique to rapidly extract and enrich viral and bacterial loads from 'complex samples', applied i… more
Date: March 27, 2008
Creator: Ness, K.; Rose, K.; Jung, B.; Fisher, K. & Mariella, R. P., Jr.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Characterization of Fine Particulate Matter (PM) and Secondary PM Precursor Gases in the Mexico City Metropolitan Area

Description: This project was one of three collaborating grants funded by DOE/ASP to characterize the fine particulate matter (PM) and secondary PM precursors in the Mexico City Metropolitan Area (MCMA) during the MILAGRO Campaign. The overall effort of MCMA-2006, one of the four components, focused on i) examination of the primary emissions of fine particles and precursor gases leading to photochemical production of atmospheric oxidants and secondary aerosol particles; ii) measurement and analysis of secon… more
Date: October 31, 2008
Creator: Luisa T. Molina, Rainer Volkamer, Benjamin de Foy, Wenfang Lei, Miguel Zavala, Erik Velasco & Molina, Mario J.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

MINING PROCESS AND PRODUCT INFORMATION FROM PRESSURE FLUCTUATIONS WITHIN A FUEL PARTICLE COATER

Description: The Next Generation Nuclear Power (NGNP) Fuel Development and Qualification Program included the design, installation, and testing of a 6-inch diameter nuclear fuel particle coater to demonstrate quality TRISO fuel production on a small industrial scale. Scale-up from the laboratory-scale coater faced challenges associated with an increase in the kernel charge mass, kernel diameter, and a redesign of the gas distributor to achieve adequate fluidization throughout the deposition of the four TRIS… more
Date: September 1, 2008
Creator: Marshall, Douglas W. & Barnes, Charles M.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Redox Dynamics of Mixed Metal (Mn, Cr, and Fe) Ultrafine Particles

Description: The impact of particle composition on metal oxidation state, and on changes in oxidation state with simulated atmospheric aging, are investigated experimentally in flame-generated nanoparticles containing Mn, Cr, and Fe. The results demonstrate that the initial fraction of Cr(VI) within the particles decreases with increasing total metal concentration in the flame. In contrast, the initial Mn oxidation state was only partly controlled by metal loading, suggesting the importance of other factors… more
Date: August 1, 2008
Creator: Nico, Peter S.; Kumfer, Benjamin M.; Kennedy, Ian M. & Anastasio, Cort
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Structurally Integrated Coatings for Wear and Corrosion

Description: Wear and corrosion of structures cuts across industries and continues to challenge materials scientists and engineers to develop cost effective solutions. Industries typically seek mature technologies that can be implemented for production with rapid or minimal development and have little appetite for the longer-term materials research and development required to solve complex problems. The collaborative work performed in this project addressed the complexity of this problem in a multi-year pro… more
Date: November 18, 2008
Creator: Beardsley, M. Brad & Sebright, Jason L.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Low-Cost Options for Moderate Levels of Mercury Control:Final Report

Description: This is the final technical report for a three-site project that is part of an overall program funded by the U.S. Department of Energy's National Energy Technology Laboratory (DOE/NETL) and industry partners to obtain the necessary information to assess the feasibility and costs of controlling mercury from coal-fired utility plants. This report summarizes results from tests conducted at MidAmerican's Louisa Generating Station and Entergy's Independence Steam Electric Station (ISES) and sorbent … more
Date: August 2008
Creator: Sjostrom, Sharon
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

PLUTONIUM-URANIUM EXTRACTION (PUREX) FACILITY ALARACT DEMONSTRATION FOR FILTER HOUSING

Description: This document presents an As Low As Reasonably Achievable Control Technology (ALARACT) demonstration for evaluating corrosion on the I-beam supporting filter housing No.9 for the 291-A-l emission unit of the Plutonium-Uranium Extraction (PUREX) Facility, located in the 200 East Area of the Hanford Site. The PUREX facility is currently in surveillance and maintenance mode. During a State of Washington, Department of Health (WDOH) 291-A-l emission unit inspection, a small amount of corrosion was … more
Date: November 25, 2008
Creator: GJ, LEBARON
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

China Refrigerator Information Label: Specification Development and Potential Impact

Description: In the last five years, China's refrigerator market has grown rapidly, and now urban markets are showing signs of saturation, with ownership rates in urban households reaching 92%. Rural markets continue to grow from a much lower base. As a result of this growth, the Chinese government in 2006 decided to revise the refrigerator standards and its associated efficiency grades for the mandatory energy information label. In the Chinese standards process, the efficiency grades for the information la… more
Date: February 1, 2008
Creator: Fridley, David; Fridley, David; Zheng, Nina; Zhou, Nan; Aden, Nathaniel; Lin, Jiang et al.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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